Hitachi FS3 Series, Руководство по обслуживанию

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1
TROUBLESHOOTING
47
Alarm Code
35
Incorrect Indoor Unit No. Setting
n
”RUN” light flickers and ”ALARM” is indicated on the remote control switch.
n
The unit No., alarm code and the unit code is alternately indicated on the set temperature section, and the
unit No. and alarm code are indicated on the display of the outdoor unit PCB.
‘
This alarm code is indicated 3 minutes after power is supplied to the outdoor unit when the indoor unit No.
connected to the outdoor unit is duplicated by setting of RSW.
In the case of H-Link System, this alarm code is indicated when DSW1 of the outdoor unit PCB and DSW5 of
the indoor unit PCB are incorrectly set.
In this case, set correctly DSW1 and DSW5 after turning off Main Switch.
Alarm Code
38
Abnormality of Picking up Circuit for Protection (Outdoor Unit)
n
”RUN” light flickers and ”ALARM” is indicated on the remote control switch.
n
The unit No., alarm code and the unit code is alternately indicated on the set temperature section, and the
unit No. and alarm code are indicated on the display of the outdoor unit PCB.
‘
This alarm code is indicated when AC 220V or 240V is supplied to voltage between terminal #3 of PCN14
on PCB1 and faston terminal N on PCB1 in the outdoor unit during inverter compressor stoppage.
No
Faulty PCB1
Is 220VAC or 240VAC applied
between terminal #3 of PCN14
on PCB1 and faston terminal "N"
on PCB1 during stopping?
No
Is 220VAC or 240VAC applied
between terminal #3 of PCN2 on
PCB1 and faston terminal "N" on
PCB1 during stoppage?
No
Yes Yes
PCB1 is normal
Check wiring connection of
other PCB. *1)
Phenomenon Cause Check Item
Action
(Turn OFF main switch)
Abnormality of
Picking up Circuit
for Protection
Incorrect Connection
Check voltage supplied to
connectors.
Repair wiring connections.
Faulty PCB Replace PCB.
Repair wiring and
connections.
*1): Check wiring system connecting to PCN14 and PCN2 on PCB1.